The first official statement of their progress in flying was made in letters of the Wrights in the _Aerophile_ in 1905, and to the Aero Club of America in 1906. 鲁伯特·萨金特·荷兰.历史性发明.
Mr. Augustus Post, secretary of the Aero Club of America, has graphically described in _The World’s Work_ for October, 1909, his impression of Orville Wright’s flying in 1908. 鲁伯特·萨金特·荷兰.历史性发明.